Results 101 to 110 of about 34,263 (308)
A Peridynamic Framework for Modeling Progressive Failure in Porous Sandstone Indentation
International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT A state‐based peridynamic model is proposed to simulate the failure mechanisms in porous rocks, using Bentheim sandstone as a specific example. Experimental observations reveal a transition from brittle to ductile failure under increasing triaxial compression. This behavior is attributed to pore compaction. The peridynamic model is enhanced to
Sahir N. Butt +2 more
wiley +1 more source
Real-time 3D mapping method of fully mechanized working face based on laser SLAM
Gong-kuang zidonghua, 2022 The mobile mapping method relies on fiber optic inertial navigation with high precision and odometer to calculate the position and attitude. But in the actual engineering practice, the precision of odometer is difficult to meet the application requirements, resulting in incomplete 3D laser point cloud of working face.
QI Yuhao, GUAN Shiyuan
openaire +1 more source
Agrarian structure in Poland : the myth of large-farm superiority [PDF]
In Poland, present policies are aimed at promoting large, mechanized farms over smaller family farms. These policies are based on the perception that large farms offer real economies of scale.
Miller, Bill R. +2 more
core
Transient Health Shocks and Agricultural Labor Demand in Rice-producing Households in Mali [PDF]
Malaria and other transient illnesses have been recognized as factors constraining economic development in tropical countries. The purpose of this paper is to determine the direct and the indirect impact of transient illness shocks, caused primarily by ...
Dalton, Timothy J. +1 more
core +1 more source
Large scale foreign land acquisitions: what interactions, opportunities and risks for different local farming systems? A case-study in Madagascar [PDF]
, 2012 Important foreign land acquisitions in developing countries can lead to structural transformation in existing farming systems. But does the development of mega-farms create the same opportunities and risks for the diversity of local rural households ...
Burnod, Perrine +2 more
core
The Milbank Quarterly, EarlyView.Policy Points Ultraprocessed foods (UPFs) are engineered to heighten reward and accelerate delivery of reinforcing ingredients, driving compulsive consumption and disrupting appetite regulation. This is a growing challenge for health policy. UPFs share key engineering strategies adopted from the tobacco industry, such as dose optimization and hedonic ...
ASHLEY N. GEARHARDT +2 more
wiley +1 more source
Review of automation technology for fully mechanized coal face of thin seam
Gong-kuang zidonghua, 2013 The paper analyzed development status of automation technology for fully mechanized coal face of thin seam at home and abroad, introduced structure of automation system of fully mechanized coal face of thin seam, and automation control technology for ...
YU Yue-sen +4 more
doaj
Gong-kuang zidonghuaThe equipment for coal mine fully mechanized working faces comes from different manufacturers, with inconsistent interfaces, different data systems and business logic, resulting in data barriers and slow data exchange between systems.
PAN Wenlong +5 more
doaj +1 more source
The Role of Indexing in Subject Retrieval [PDF]
, 1975 On first reading the list of speakers proposed for this institute, I became aware of being rather the "odd man out" for two reasons. Firstly, I was asked to present a paper on PRECIS which is very much a verbal indexing system-at a conference ...
Austin, Derek
core
Gender &History, EarlyView.Abstract This article explores the marmalade machine, a mechanical device designed to slice orange peel. These niche objects were manufactured between roughly 1870 and 1938 in Britain. As a so‐called ‘labour‐saving’ gadget, the marmalade machine sliced orange peel quickly and effectively, removing the tedious process of slicing orange peel by hand ...
Katie Carpenter
wiley +1 more source